KT-14294 for to stdlib to firstOrNull/lastOrNull: intention is absent if there is additional var before for loop

#KT-14294 Fixed

idea/testData/intentions/loopToCallChain/smartCasts/smartCastNotBroken3.kt

@@ -0,0 +1,16 @@
+// WITH_RUNTIME
+// INTENTION_TEXT: "Replace with 'map{}.map{}.firstOrNull{}'"
+// INTENTION_TEXT_2: "Replace with 'asSequence().map{}.map{}.firstOrNull{}'"
+fun foo(list: List<String>, o: Any) {
+    if (o is CharSequence) {
+        var result: Any? = null
+        <caret>for (s in list) {
+            val a = s.length + (o as String).capitalize().hashCode()
+            val x = a * o.length
+            if (x > 1000) {
+                result = x
+                break
+            }
+        }
+    }
+}